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Recognised as Colour

#0063FB

  • #0063FB
  • Blue
  • Dark
  • Nearest: Medium slateblue

#0063FB is a blue with RGB values 0, 99, 251 and HSL 216°, 100%, 49%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#0063FB#0063FB
HEX#0063FB
RGBrgb(0, 99, 251)
RGB (0–1)0, 0.3882, 0.9843
RGB percentages0%, 38.8%, 98.4%
HSLhsl(216.3, 100%, 49.2%)
HSV / HSBhsv(216.3, 100%, 98.4%)
CMYK100%, 60.6%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer25,595
CSS custom property--colour: #0063FB;

Brightness & contrast

Relative luminance0.15889WCAG 2.x, 0 is black and 1 is white
Perceived brightness113.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.03:1
Contrast with white5.03:1WCAG normal text: AA
Contrast with black4.18:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#FF9C04

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#007AFFno red cones; affects about 1% of men; ΔE 16.5 from the original
Deuteranopia#0065F8no green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#008BA6no blue cones; rare, and affects men and women equally; ΔE 81.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.03:1WCAG large text: AAA
Contrast with black, large text4.18:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 17.9Royal blue · ΔE 18.8Slate blue · ΔE 23.8Medium purple · ΔE 32.5Dodgerblue · ΔE 33.8Blue violet · ΔE 35.2
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 17.87, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FB9800
Analogous#00E1FB, #1A00FB
Triadic#FB0063, #63FB00
Split complementary#FB1A00, #E1FB00
Tetradic#FB00E1, #FB9800, #00FB1A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8DEFF
Lighter +30%#95BFFF
Lighter +20%#62A0FF
Lighter +10%#2F81FF
Darker −10%#004FC8
Darker −20%#003B95
Darker −30%#002762
Darker −40%#00132F
More saturated +25%#0063FB
Less saturated −25%#1F6ADC

Channel breakdown

R0
G99
B251
Red0 (0%)
Green99 (38.8%)
Blue251 (98.4%)
Hue216.33°
Saturation (HSL)100%
Lightness49.22%
Dominant channelBlue
Hex per channelR 00 · G 63 · B FB

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Every value on this page was computed from “0063fb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.